LunaHook-mirror/LunaHook/engine64/LightVN.cpp
恍兮惚兮 e518d6431f sizet
2024-08-21 20:25:56 +08:00

197 lines
6.0 KiB
C++

#include "LightVN.h"
namespace
{
bool _1()
{
// void __fastcall sub_1404B7960(void **Src)
// HQ-1C*0@4B7960:LightApp.exe
const BYTE BYTES[] = {
0x90,
XX4,
XX4,
0x48, 0x8b, 0xce,
0xe8, XX4,
0x90,
0x48, 0x8b, XX2,
0x48, 0x83, 0xfa, 0x08,
0x72, 0x36,
0x48, 0x8D, 0x14, 0x55, 0x02, 0x00, 0x00, 0x00,
0x48, 0x8b, XX2,
0x48, 0x8b, 0xc1,
0x48, 0x81, 0xFA, 0x00, 0x10, 0x00, 0x00,
0x72, 0x19,
0x48, 0x83, 0xC2, 0x27,
0x48, 0x8b, XX2,
0x48, 0x2b, 0xc1,
0x48, 0x83, 0xC0, 0xF8,
0x48, 0x83, 0xF8, 0x1F,
0x0f, 0x87, XX4,
0xe8, XX4
};
auto suc = false;
auto addrs = Util::SearchMemory(BYTES, sizeof(BYTES), PAGE_EXECUTE, processStartAddress, processStopAddress);
for (auto addr : addrs)
{
ConsoleOutput("LightVN %p", addr);
const BYTE aligned[] = {0xCC, 0xCC, 0xCC, 0xCC};
addr = reverseFindBytes(aligned, sizeof(aligned), addr - 0x100, addr);
if (addr == 0)
continue;
addr += 4;
ConsoleOutput("LightVN %p", addr);
HookParam hp;
hp.address = addr;
hp.type = CODEC_UTF16 | USING_STRING | DATA_INDIRECT;
hp.index = 0;
hp.offset = get_reg(regs::rcx);
hp.filter_fun = [](void *data, size_t *len, HookParam *hp)
{
std::wstring s((wchar_t *)data, *len / 2);
if (s.substr(s.size() - 2, 2) == L"\\w")
*len -= 4;
return true;
};
suc |= NewHook(hp, "LightVN");
}
return suc;
}
bool _2()
{
// https://vndb.org/r86006
// ファーストキス(体験版)
// https://vndb.org/r85992
// フサの大正女中ぐらし
BYTE sig[] = {
//clang-format off
0x48, XX, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F,
0x48, 0x3B, 0xC3,
0x76, XX,
0x48, XX, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F,
//clang-format on
};
auto addr = MemDbg::findBytes(sig, sizeof(sig), processStartAddress, processStopAddress);
if (addr == 0)
return 0;
addr = MemDbg::findEnclosingAlignedFunction(addr);
if (addr == 0)
return 0;
HookParam hp;
hp.address = addr;
hp.type = CODEC_UTF16 | USING_STRING;
hp.offset = get_stack(6);
hp.filter_fun = [](void *data, size_t *len, HookParam *hp)
{
if (all_ascii((wchar_t *)data, *len))
return false;
// 高架下に広がる[瀟洒]<しょうしゃ>な店内には、あたしたちのような学生の他に、
auto str = std::wstring(reinterpret_cast<LPWSTR>(data), *len / 2);
auto filterpath = {
L".rpy", L".rpa", L".py", L".pyc", L".txt",
L".png", L".jpg", L".bmp",
L".mp3", L".ogg",
L".webm", L".mp4",
L".otf", L".ttf", L"Data/"};
for (auto _ : filterpath)
if (str.find(_) != str.npos)
return false;
str = std::regex_replace(str, std::wregex(L"\\[(.*?)\\]<(.*?)>"), L"$1");
write_string_overwrite(data, len, str);
return true;
};
return NewHook(hp, "LightVN2");
}
}
namespace
{
bool lightvnparsestring()
{
BYTE sig[] = {
0x4c, 0x8b, 0x47, 0x10,
0x48, 0x83, 0x7f, 0x18, 0x08,
0x72, 0x03,
0x48, 0x8b, 0x3f,
0x48, 0x8b, 0xd7,
0x48, 0x8b, 0xcb,
0xe8};
auto addr = MemDbg::findBytes(sig, sizeof(sig), processStartAddress, processStopAddress);
if (addr == 0)
return 0;
addr = MemDbg::findEnclosingAlignedFunction_strict(addr);
if (addr == 0)
return 0;
HookParam hp;
hp.address = addr;
hp.type = CODEC_UTF16 | USING_STRING | NO_CONTEXT;
// 包含太多短句,所以无法内嵌
hp.text_fun = [](hook_stack *stack, HookParam *, uintptr_t *data, uintptr_t *split, size_t *len)
{
*data = (uintptr_t)((TextUnionW *)stack->rdx)->getText();
*len = ((TextUnionW *)stack->rdx)->size * 2;
std::wstring str = (wchar_t *)*data;
if (startWith(str, L"\\n") && endWith(str, L"\\n"))
{
*split = 1;
}
};
hp.filter_fun = [](LPVOID data, size_t *size, HookParam *)
{
auto str = std::wstring((wchar_t *)data, *size / 2);
std::wregex pattern(L"-{2,}");
str = std::regex_replace(str, pattern, L"");
return write_string_overwrite(data, size, str);
};
hp.newlineseperator = L"\\n";
return NewHook(hp, "Light.VN.16");
}
bool xreflightvnparsestring()
{
// ver16 是上面的xref
// ver12 找不到上面的函数
auto checkstrings = {
L"backlog voice already exists at line: {}",
L"attempting to log to backlog when backlog showing. likely you faded it out."};
auto succ = false;
for (auto str : checkstrings)
{
auto straddr = MemDbg::findBytes(str, wcslen(str) * 2, processStartAddress, processStopAddress);
if (straddr == 0)
continue;
// 140CADC30
// 48 8D 0D C5 94 AB 00
// 1401F4764
BYTE lea[] = {0x48, 0x8d, XX};
for (auto leaaddr : Util::SearchMemory(lea, sizeof(lea), PAGE_EXECUTE, processStartAddress, processStopAddress))
{
auto refaddr = (*(DWORD *)(leaaddr + 3)) + leaaddr + 7;
if (refaddr != straddr)
continue;
auto funcaddr = MemDbg::findEnclosingAlignedFunction_strict(leaaddr, 0x2000);
if (funcaddr == 0)
continue;
HookParam hp;
hp.address = funcaddr;
hp.type = CODEC_UTF16 | USING_STRING | NO_CONTEXT;
hp.text_fun = [](hook_stack *stack, HookParam *, uintptr_t *data, uintptr_t *split, size_t *len)
{
// wstring=TextUnionW for msvc c++17
*data = (uintptr_t)((TextUnionW *)stack->rdx)->getText();
*len = ((TextUnionW *)stack->rdx)->size * 2;
};
succ |= NewHook(hp, "Light.VN.12");
}
}
return succ;
}
}
bool LightVN::attach_function()
{
bool ok = _1();
ok = _2() || ok;
ok |= lightvnparsestring();
ok |= xreflightvnparsestring();
return ok;
}